A multifunctional quick-connect device for impact tools

Abstract

The utility model discloses a multifunctional quick connection device for an impact tool, including a housing, a shaft hole is provided at the center of the housing, a transmission shaft is rotatably connected in the shaft hole through a bearing, and a damping spring for providing elastic impact and increasing torque and a ratchet assembly used in conjunction therewith are mounted on the transmission shaft; both ends of the transmission shaft extend out of the housing, and one end is connected to a power input device, and the other end is connected to an impact tool head. The utility model has a simple structure, a wide range of uses, and is easy to operate. Users can quickly switch different tool heads according to different work requirements. It has good versatility and adaptability, and can effectively provide stable elastic impact performance and increase tightening torque, which can ensure that users achieve accurate pre-tightening force when tightening workpieces, improve work quality and efficiency, and has high reliability and long service life.

Description

Technical Field

[0001] The utility model relates to a multifunctional quick connection device for an impact tool, belonging to the technical field of impact equipment. Background Art

[0002] With the needs of industrial development, the portability, versatility and efficiency of tools are increasingly required. Most existing impact equipment can only achieve a single function, or although there are multifunctional impact equipment, most of them are complex in structure and inconvenient to operate. For example, patent application document CN 102814528 A discloses a multifunctional impact drill, including a power device, an impact device, an electric drill impact conversion device and an output shaft, a large gear is sleeved on the output shaft with clearance fit, and the large gear is connected to the power device. The multifunctional impact drill includes a torque adjustment device, which includes an upper impact gear, a torsion steel ball, a lower pressure plate, and a torsion spring, wherein a convex point is provided on the right end face of the upper impact gear, the torsion steel ball matches the convex point, and the torsion steel ball receives the pressure of the torsion spring through the lower pressure plate, and at the same time, the upper impact gear and the output shaft are interference fit, and a torque transmission hole is provided on the large gear, and the torsion steel ball is located in the torque transmission hole. The advantages are that one machine has three uses and more functions. However, there are problems such as complex structure, cumbersome operation, and unstable torque. Utility Model Content

[0003] In view of this, the purpose of the utility model is to provide a multifunctional quick connection device for an impact tool, so as to at least solve the problems of the existing multifunctional impact drill mentioned in the background art, such as complex structure, cumbersome operation, unstable torque, etc.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] A multifunctional quick-connect device for an impact tool comprises a shell, wherein an axial hole is provided at the center of the shell, a transmission shaft is rotatably connected to the axial hole via a bearing, and a damping spring for providing elastic impact and increasing torque and a ratchet assembly used in conjunction therewith are mounted on the transmission shaft; both ends of the transmission shaft extend out of the shell, and one end is connected to a power input device, and the other end is connected to an impact tool head.

[0006] Furthermore, a first bearing cavity and a second bearing cavity are respectively provided at both ends of the axial hole of the shell, the bearing comprises a first bearing and a second bearing arranged in the first bearing cavity and the second bearing cavity, the transmission shaft is inserted into the two bearing holes, rotates in the bearing holes and slides along the bearing holes; a first ratchet mounting cavity and a second ratchet mounting cavity are provided between the two bearing cavities, and the first ratchet mounting cavity is a movable cavity, the ratchet assembly comprises a movable ratchet arranged in the movable cavity, and a fixed ratchet arranged in the second ratchet mounting cavity, the ratchet teeth of the movable ratchet and the fixed ratchet are arranged opposite to each other, the transmission shaft is fixedly connected to the movable ratchet, and is slidably connected to the fixed ratchet.

[0007] Furthermore, the transmission shaft is a stepped shaft, which is provided with a quick-connect end, a spring limiting boss, a first bearing retaining spring, a movable ratchet fixing portion, a fixed ratchet retaining spring and a power input connection end in sequence starting from an end close to the impact tool head; the first bearing is sleeved on the transmission shaft, and abuts against the first bearing retaining spring on the side away from the quick-connect end, and the sliding limitation of the first bearing is achieved by the first bearing retaining spring, and the damping spring is arranged between the spring limiting boss and the first bearing; the movable ratchet is sleeved on and fixedly connected to the movable ratchet fixing portion, and the fixed ratchet is sleeved on the transmission shaft, and abuts against the fixed ratchet retaining spring on the side away from the movable ratchet, and the sliding limitation of the fixed ratchet is achieved by the fixed ratchet retaining spring.

[0008] Furthermore, the ratchet teeth of the movable ratchet and the fixed ratchet are matched triangular teeth.

[0009] Furthermore, the movable ratchet is a circular ratchet, and the fixed ratchet is an external hexagonal ratchet.

[0010] Furthermore, the quick-connect end is a connecting square head, and an anti-loosening marble is provided on the connecting square head.

[0011] Furthermore, the power input connection end is a square rod adapted to the power input device, and the square rod and the power input device can be fixedly connected by snapping.

[0012] Furthermore, a plurality of anti-slip protrusions are provided on the outer surface of the shell.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] (1) The utility model has a simple structure, is easy to maintain and replace, and has a compact structure. It can be used in a small space and is suitable for a variety of working environments. It has good flexibility and high applicability.

[0015] (2) The utility model has a wide range of uses and is easy to operate. Users can quickly and easily switch between different tool heads, such as sleeves, screwdriver bits, drill bits, and other tools, according to different work needs without changing the main structure, so that one device can adapt to a variety of work scenarios. It has high versatility and adaptability, and can effectively reduce the amount of tools carried and the time for replacement, reduce equipment downtime, and improve work efficiency;

[0016] (3) The damping spring and the ratchet assembly used in conjunction with it provide stable elastic impact performance and can effectively increase the tightening torque, which can ensure that the user achieves accurate pre-tightening force when tightening the workpiece, thereby improving work quality and efficiency. At the same time, good elastic impact performance can ensure that the device is not easily damaged when subjected to high-intensity work in an industrial environment, thereby improving the reliability and service life of the equipment, and can also enable the transmission shaft to quickly return to its initial state after completing the work, thereby improving the smoothness of continuous work, reducing interruption time, and improving work efficiency;

[0017] (4) The utility model is light and easy to carry, and users can easily carry it to different workplaces, thereby improving the mobility and flexibility of work.

[0018] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings, in which:

[0020] Figure 1 A schematic structural diagram of a multifunctional quick-connect device for an impact tool provided in one embodiment of the utility model;

[0021] Figure 2 It is a structural schematic diagram of the transmission shaft in the utility model.

[0022] In the figure: 1. Shell; 101. First bearing cavity; 102. Second bearing cavity; 103. First ratchet mounting cavity; 104. Second ratchet mounting cavity; 105. Anti-skid protrusion; 2. Bearing; 201. First bearing; 202. Second bearing; 3. Transmission shaft; 301. Quick-connect end; 302. Spring limiting boss; 303. First bearing retaining spring; 304. Movable ratchet fixing part; 305. Fixed ratchet retaining spring; 306. Power input connection end; 4. Damping spring; 5. Ratchet assembly; 501. Movable ratchet; 502. Fixed ratchet. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In order to solve the problems of complex structure, cumbersome operation and unstable torque of the existing multifunctional impact drill, the present utility model provides a multifunctional quick connection device for an impact tool, such as Figure 1-Figure 2 As shown, it includes a housing 1, a shaft hole is provided in the center of the housing 1, a transmission shaft 3 is rotatably connected to the shaft hole through a bearing 2, and a damping spring 4 for providing elastic impact and increasing torque and a ratchet assembly 5 used in conjunction with the same are mounted on the transmission shaft 3; both ends of the transmission shaft 5 extend out of the housing 1, one end is connected to a power input device, and the other end is connected to an impact tool head, the power input device can be a drill, a hand drill, etc., and the impact tool head can be a socket, a screwdriver bit, a drill bit, etc.

[0025] Specifically, a first bearing cavity 101 and a second bearing cavity 102 are respectively provided at both ends of the shaft hole of the housing 1, and the bearing 2 includes a first bearing 201 and a second bearing 202 arranged in the first bearing cavity 101 and the second bearing cavity 102, and the transmission shaft 3 is installed in the two bearing holes, and can rotate in the bearing holes and slide along the bearing holes. The rotational movement of the transmission shaft 3 is supported by the first bearing 201 and the second bearing 202, which ensures the stability of rotation and reduces friction, thereby extending the service life of the equipment. A first ratchet mounting cavity 103 and a second ratchet mounting cavity 104 are provided between the two bearing cavities, and the first ratchet mounting cavity 103 is a movable cavity, and the ratchet assembly 5 includes a movable ratchet 501 arranged in the movable cavity, and a fixed ratchet 502 arranged in the second ratchet mounting cavity 104, and the ratchet teeth of the movable ratchet 501 and the fixed ratchet 502 are arranged opposite to each other, and the transmission shaft 3 is fixedly connected to the movable ratchet 501, and is slidably connected to the fixed ratchet 502.

[0026] The transmission shaft 3 is a stepped shaft, and starting from the end close to the impact tool head, the stepped shaft is provided with a quick-connect end 301, a spring limiting boss 302, a first bearing retaining spring 303, a movable ratchet fixing portion 304, a fixed ratchet retaining spring 305 and a power input connection end 306. The first bearing 201 is sleeved on the transmission shaft 3, and the side away from the quick-connect end 301 abuts against the first bearing retaining spring 303, and the sliding limit of the first bearing 201 is achieved by the first bearing retaining spring 303, and the damping spring 4 is arranged between the spring limiting boss 302 and the first bearing 201. The movable ratchet fixing portion 304 is a square structure, and the movable ratchet 501 is fixedly connected to the transmission shaft 3 through the square structure. When the transmission shaft 3 moves, the movable ratchet 501 will move with the transmission shaft 3, and the fixed ratchet 502 is sleeved on the transmission shaft 3, and the side away from the movable ratchet 501 is in contact with the fixed ratchet spring 305, and the sliding limit of the fixed ratchet 502 is achieved by the fixed ratchet spring 305.

[0027] The ratchet teeth of the movable ratchet 501 and the fixed ratchet 502 are matched triangular teeth. The movable ratchet 501 is a circular ratchet, which is more convenient to move in the first ratchet mounting cavity 103, while the fixed ratchet 502 is an external hexagonal ratchet, which can be fixed in the second ratchet mounting cavity 104 and is not easy to rotate. The movable ratchet 501 adopts a circular ratchet design to ensure stable engagement between the ratchet teeth during impact and rotation, reduce wear, and improve the durability of the equipment. The fixed ratchet 502 adopts an external hexagonal ratchet design to ensure stable transmission of torque under impact, improving the accuracy and reliability of the work.

[0028] The quick-connect end 301 is a connecting square head, on which a loose-proof marble is arranged. The connecting structure is highly convenient for disassembly and replacement, and can effectively prevent the tool head from falling off, thereby ensuring the safety of work and the stability of the tool.

[0029] The power input connection end 306 is a square rod adapted to the power input device, and the square rod and the power input device can be fixedly connected by clamping. Through the clamping structure, the device can be quickly installed and disassembled, which improves the flexibility and convenience of work.

[0030] The outer surface of the housing 1 is provided with a plurality of anti-slip protrusions 105 .

[0031] The housing 1 is made of plastic or rubber.

[0032] Working principle and process of the device:

[0033] During installation, connect the square rod with the electric drill clamp, and install the impact tool head (such as a socket, a screw bit, a drill bit, etc.) on the connecting square head. During the installation process, when the impact tool head contacts the anti-loosening marble, the anti-loosening marble will be stuck in the internal groove of the impact tool head to prevent the tool from falling off. In this way, operations such as tightening the workpiece and cutting can be achieved. One equipment has multiple styles, which reduces the need to carry a variety of tools.

[0034] When working, holding the housing 1 and starting the hand drill will drive the transmission shaft 3 to rotate. During the operation of the impact tool head, the objects tightened or the workpieces cut will give the transmission shaft 3 a compressive reaction force. When the transmission shaft 3 is compressed, it will slide to the side away from the quick-connect end 301. The first bearing 201 and the fixed ratchet 502 are both immovable relative to the transmission shaft 3. The damping spring 4 is in a compressed state. At the same time, the movable ratchet 501 will move with the transmission shaft 3, so that the movable ratchet 501 and the fixed ratchet 502 are meshed with each other. When the transmission shaft 3 is released from the compressed state, the damping spring 4 is restored, so that the movable ratchet 501 and the fixed ratchet 502 can be meshed with each other. 02 are separated from each other. During this process, the movable ratchet 501 is acted upon by the transmission shaft 3 and the damping spring 4, forming two actions of rotation and sliding back and forth. Since the ratchet teeth of the movable ratchet 501 and the fixed ratchet 502 are matched triangular teeth, tooth jumping phenomenon will occur between the two, thereby causing the movable ratchet 501 and the fixed ratchet 502 to form an impact effect. At the same time, the meshing action between the ratchet teeth of the movable ratchet 501 and the fixed ratchet 502 can increase the operating torque, which can ensure that the user achieves accurate pre-tightening force when tightening the workpiece, avoids over-tightening or over-loosening, and improves work quality and efficiency.

[0035] When the above operation has not reached the tightening state or the cutting is not in place, you can also hold the shell 1 and pull it back hard, and the transmission shaft 3 will drive the movable ratchet 501 to move forward relative to the shell 1, so that the impact distance formed by the movable ratchet 501 and the fixed ratchet 502 is increased, thereby increasing the operating torque, and then increasing the torque of the tightened object or cutting to achieve the purpose of pre-tightening.

[0036] The above is only a preferred embodiment of the utility model, and does not limit the confidentiality of the utility model in any form. Any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still falls within the scope of the technical solution of the utility model.

Claims

1. A multifunctional quick-connect device for an impact tool, characterized in that: The invention comprises a housing (1), wherein a shaft hole is provided at the center of the housing (1), a transmission shaft (3) is rotatably connected to the shaft hole via a bearing (2), and a damping spring (4) for providing elastic impact and increasing torque and a ratchet assembly (5) used in conjunction with the transmission shaft (3) are sleeved on the transmission shaft (3); both ends of the transmission shaft (3) extend out of the housing (1), one end is connected to a power input device, and the other end is connected to an impact tool head.

2. The multifunctional quick-connect device for an impact tool according to claim 1, characterized in that: A first bearing cavity (101) and a second bearing cavity (102) are respectively provided at both ends of the shaft hole of the housing (1); the bearing (2) comprises a first bearing (201) and a second bearing (202) arranged in the first bearing cavity (101) and the second bearing cavity (102); the transmission shaft (3) is inserted into the two bearing holes, rotates in the bearing holes and slides along the bearing holes; a first ratchet mounting cavity (103) and a second ratchet mounting cavity (104) are provided between the two bearing cavities, and the first ratchet mounting cavity (103) is a movable cavity; the ratchet assembly (5) comprises a movable ratchet (501) arranged in the movable cavity, and a fixed ratchet (502) arranged in the second ratchet mounting cavity (104); the ratchet teeth of the movable ratchet (501) and the fixed ratchet (502) are arranged opposite to each other; the transmission shaft (3) is fixedly connected to the movable ratchet (501) and is slidably connected to the fixed ratchet (502).

3. The multifunctional quick-connect device for an impact tool according to claim 2, characterized in that: The transmission shaft (3) is a stepped shaft, and the stepped shaft is provided with a quick-connect end (301), a spring limiting boss (302), a first bearing retaining spring (303), a movable ratchet fixing portion (304), a fixed ratchet retaining spring (305) and a power input connection end (306) in sequence from one end close to the impact tool head; the first bearing (201) is sleeved on the transmission shaft (3), and the side away from the quick-connect end (301) is in contact with the first bearing retaining spring (303), and the first bearing retaining spring (303) is used to realize The first bearing (201) is slidingly limited, and the damping spring (4) is arranged between the spring limiting boss (302) and the first bearing (201); the movable ratchet (501) is sleeved on and fixedly connected to the movable ratchet fixing portion (304), and the fixed ratchet (502) is sleeved on the transmission shaft (3) and abuts against the fixed ratchet retaining spring (305) on a side away from the movable ratchet (501), so that the sliding limit of the fixed ratchet (502) is achieved through the fixed ratchet retaining spring (305).

4. The multifunctional quick-connect device for an impact tool according to claim 3, characterized in that: The ratchet teeth of the movable ratchet (501) and the fixed ratchet (502) are matched triangular teeth.

5. The multifunctional quick-connect device for an impact tool according to claim 4, characterized in that: The movable ratchet (501) is a circular ratchet, and the fixed ratchet (502) is an external hexagonal ratchet.

6. The multifunctional quick-connect device for an impact tool according to claim 3, characterized in that: The quick-connect end (301) is a connecting square head, and an anti-loosening marble is provided on the connecting square head.

7. The multifunctional quick-connect device for an impact tool according to claim 3, characterized in that: The power input connection end (306) is a square rod adapted to the power input device, and the square rod and the power input device can be snap-fitted and fixedly connected.

8. The multifunctional quick connection device for an impact tool according to any one of claims 1 to 7, characterized in that: The outer surface of the shell (1) is provided with a plurality of anti-slip protrusions (105).

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